Citation:

PANGAEA.859217

Name: Nutrients in porewater of sediment profile M42/2_425
Creator: Per Hall
Published: 2006-02-15
License: https://creativecommons.org/licenses/by/3.0/

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Published: 2006-02-15 • DOI registered: 2006-03-20

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Project(s):

Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality (BENGAL)

Funding:

Fourth Framework Programme (FP4), grant/award no. MAS3950018 : Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality

Coverage:

Latitude: 48.992333 * Longitude: -16.424833

Date/Time Start: 1998-08-15T21:17:00 * Date/Time End: 1998-08-15T21:17:00

Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 0.1900 m

Event(s):

M42/2_425 (M42/2_MC-30) * Latitude: 48.992333 * Longitude: -16.424833 * Date/Time: 1998-08-15T21:17:00 * Elevation: -4812.0 m * Location: Bengal * Campaign: * Basis: * Method/Device: MultiCorer (MUC)

Comment:

Total carbonate (Ct) concentrations were determined on-board ship during Discovery 222 (leg A) nd 226 cruises, using colourmetric methods (Johnsson et al., 1987) with a precision of 0.2% RSD (n=10) using a sample loop of 4ml. During Discovery 231, 236 and Meteor 42/2 cruises a newly developed system (based on infrared detection of (CO2) were used for determination of total carbonate (Goyet and Snover, 1993; OSullivan and Millero, 1998). The precision of this method was also 0.2% RSD (n=10) using a sample loop of 4ml. Samples were filtrated through disposable sterile cellulose acetate filters (0.45µm) and stored refrigerated in polyethylene vials (rinsed in MQ-water) until analysis on-board.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Depth, top/min	Depth top	m	Hall, Per
3	Depth, bottom/max	Depth bot	m	Hall, Per
4	Alkalinity, total	AT	mmol(eq)/l	Hall, Per	High-precision potentiometric titration (Haraldsson et al., 1997)
5	Carbonate ion	[CO3]2-	µmol/l	Hall, Per	Infrared detection of CO2 (Goyet & Snover, 1993)
6	Carbon, organic, dissolved	DOC	µmol/l	Hall, Per	High temperature catalytic oxidation (Sugimura & Suzuki, 1988)
7	Nitrate	[NO3]-	µmol/l	Hall, Per	Nutrients, CHEMLAB autoanalyser

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

100 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Depth top [m]	3 Depth bot [m]	4 AT [mmol(eq)/l]	5 [CO3]2- [µmol/l]	6 DOC [µmol/l]	7 [NO3]- [µmol/l]
0.0000			2.3884	2170.8	55.7	21.3
0.0025	0.000	0.005	2.2024	2062.7	546.9	32.2
0.0075	0.005	0.010	2.2105	2070.6	374.7	37.2
0.0125	0.010	0.015	2.2275	2106.8	248.8	37.2
0.0175	0.015	0.020	2.2574	2156.1	129.1	38.6
0.0225	0.020	0.025	2.2949	2150.6	123.7	38.6
0.0275	0.025	0.030	2.3202	2116.6	131.1	40.2
0.0350	0.030	0.040	2.3109	2218.4	126.5	39.7
0.0450	0.040	0.050	2.3940	2268.7	110.3	41.2
0.0550	0.050	0.060	2.4281	2245.8	121.4	37.4
0.0700	0.060	0.080	2.4694	2333.5	157.5	35.8
0.0900	0.080	0.100	2.4972	2279.5	116.0	34.4
0.1100	0.100	0.120	2.5006	2277.7	95.2	31.6
0.1300	0.120	0.140	2.5003	2295.5	86.8	33.0
0.1500	0.140	0.160	2.5544	2360.9	74.8	31.3
0.1700	0.160	0.180	2.5980	2434.7	117.7	28.6
0.1900	0.180	0.200	2.6195	2437.4	65.4	27.7